The wxPython tutorial

The Graphics Device Interfacehttp://www.zetcode.com/wxpython/gdi/wxBufferedDCwxBufferedPaintDCwxPostScriptDCwxMemoryDCwxPrinterDCwxScreenDCwxClientDCwxPaintDCwxWindowDCThe wx.ScreenDC is used to draw anywhere on the screen.The wx.WindowDC is used if we want to paint on the wholewindow (Windows only). This includes window decorations.The wx.ClientDC is used to draw on the client area of awindow. The client area is the area of a window without it'sdecorations (title and border). The wx.PaintDC is used to drawon the client area as well. But there is one difference betweenthe wx.PaintDC and the wx.ClientDC. The wx.PaintDC shouldbe used only from a wx.PaintEvent. The wx.ClientDC shoudnot be used from a wx.PaintEvent. The wx.MemoryDC is usedto draw graphics on the bitmap. The wx.PostScriptDC is usedto write to PostScript files on any platform. The wx.PrinterDCis used to access a printer (Windows only).Drawing a simple lineOur first example will draw a simple line onto the client area ofa window.DrawLine(int x1, int y1, int x2, int y2)This method draws a line from the first point to the second.Excluding the second point.#!/usr/bin/python# line1.pyimport wxclass Line(wx.Frame):def __init__(self, parent, id, title):2 de 44 27/04/2008 1:08